Motor Vehicle Door Handle Securing Element Internal Fastening
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Solution Overview
Problem
Existing motor vehicle door handles lack sufficient burglary security while maintaining low installation effort.
Innovation Solution
A handle design with a securing element that keeps the fastening means entirely inside the movable part, featuring an angled first arm with a fastening section and a protective cap, ensuring the fastening means are protected from external manipulation, and incorporating a lock cylinder for secure locking and unlocking mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fastening means is accessible from the outside of the movable part, then the installation and maintenance is easier, but the burglary security is reduced
Solution Approach 1:
The fastening means is extracted from the external accessible area and positioned entirely within the interior space of the movable part. The securing element extends through the paneling to provide internal access only, removing the fastening means from external reach and eliminating the vulnerability to external manipulation and tool-based attacks.
Solution Approach 2:
Instead of providing external access to the fastening means for installation and maintenance, the design inverts the access approach by providing internal access only. The securing element is designed to be accessible from the interior, reversing the conventional external access model and thereby securing the fastening means against external burglary attempts.
2Reliability
If the fastening means is placed inside the movable part, then the burglary security is improved, but the installation effort increases
Solution Approach 1:
The handle assembly is segmented into distinct components: the handle body, the securing element, and the fastening means. This segmentation allows the fastening means to be positioned internally while the handle body remains externally accessible, enabling installation through coordinated assembly of separate parts rather than requiring complete disassembly or complex internal access.
Solution Approach 2:
The securing element acts as an intermediary component that bridges the external handle body and the internal fastening means. It extends through the paneling to provide a connection path that allows internal fastening while maintaining external handle functionality, simplifying the installation process by providing a pre-configured mounting structure.
3Reliability
If the fastening means is completely inside the movable part, then the protection against manipulation is enhanced, but the complexity of the securing element increases
Solution Approach 1:
The securing element is designed as a multi-functional component that simultaneously serves as a structural support for the handle body, a mounting bracket for the fastening means, and a connection element between the interior and exterior. This consolidation of multiple functions into a single component reduces the overall number of parts and simplifies the assembly structure despite the internal positioning of the fastening means.
Data Source
Figure 1~2
Figure 3~5
AI summary
The handle (3) has a securing element (10) which is provided on outer lining of movable portion (1). A carrier is provided inside the movable portion. A screw element is attached to the securing element. The securing element is designed such that the screw element is provided inside the movable element. The mounting portion (14) is inclined at the angle ranging between 0-75 degrees. The thickness of securing element is set between 0.5-3 mm.